Date: Sun, 9 Sep 2012 20:10:13 GMT From: Stefano Marinelli <stefano@dragas.it> To: freebsd-amd64@FreeBSD.org Subject: Re: amd64/171355: FreeBSD 9.1rc1 (and 10-HEAD) not booting on HP Pavilion g6 2147sl Message-ID: <201209092010.q89KADsw055757@freefall.freebsd.org>
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The following reply was made to PR amd64/171355; it has been noted by GNATS. From: Stefano Marinelli <stefano@dragas.it> To: Alexander Motin <mav@FreeBSD.org> Cc: attilio@freebsd.org, bug-followup@FreeBSD.org, John Baldwin <jhb@freebsd.org>, re@FreeBSD.org Subject: Re: amd64/171355: FreeBSD 9.1rc1 (and 10-HEAD) not booting on HP Pavilion g6 2147sl Date: Sun, 9 Sep 2012 22:03:24 +0200 > Thanks, that explains a lot. AMD started to use their proper vendor ID = for HPET, but seems haven't fixed level-triggered interrupts and haven't = implemented (removed?) message interrupts. All together it broke = workaround in HPET driver that supposed to block HPET by default in such = cases. Such patch should restore it: [...] Thank you. I am downloading the sources and will try to patch and = recompile the kernel as soon as it will have finished. Then, I will = report back. > I can't say about frequency control, never looked inside AMD's = PowerNow; but C-states are detected as I can see. You should just enable = them by adding to /etc/rc.conf lines: > performance_cx_lowest=3D"C2" > economy_cx_lowest=3D"C2" I tried this, and actually I can see the C2 status is now active. Still, = the watt-o-meter I am using shows a 50W power consumption in idle state = (wifi is off as unsupported), compared to 23/24 on GNU/Linux (Arch) with = wifi on. Thank you, Stefano=
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